Why do you guys keep suspecting the buffering on the Samsung and Toshiba players? I agree that buffer handling is a possible culprit, but what facts make you suspect buffering in the HD841 or 4960?
Here's the facts as I understand them:
1) ISO images prepared with DVD-Audiofile do not play on a Samsung HD841 or a Toshiba 4960 without gaps.
2) ISO images prepared with Wavelab 5.0a play properly on a Samsung HD841 or Toshiba 4960 if you add pictures.
3) ISO images prepared with DVD-Audio Solo 1.1 play properly on a Samsung HD841 or Toshiba 4960, without gaps.
4) No one on recent threads has said whether ISO images prepared with discWelder play properly on a Samsung HD841 or Toshiba 4960, without gaps.
5) Other players such as the Denon 220 and Pioneer Elite DV-45a play DVD-Audio discs, regardless of which of the above programs were used
These facts could imply that there's something wrong with the Samsung HD841 and Toshiba 4690 players. They could also imply that there's something wrong with DVD-Audiofile (or its underlying program, DVD-Audio Tools), but that most players are tolerant of the error.